It is one of the aims of the book to bring out the view that the prince of scholastics and the king of dialecticians was a man of the purest and deepest “monasticism.” But he was not destined to be as an Anselm, a Bernard, or a Hugh of S. Victor. The Saint was sent to Naples for the prosecution of his studies, and whilst there he asked for and received the habit of S. Dominic. The author gives a brilliant sketch of Naples as it was under the sway of Frederick II. He then devotes a whole chapter to a “study” of the new orders of S. Francis and S. Dominic, for the purpose of bringing out vividly before the reader the new world that was springing up and the new race of men that the church was calling forth to deal with it. We have no space to quote from this chapter, but, even taken apart from its connection with S. Thomas, it is full of interest and life. Thus was Thomas of Aquin prepared and equipped; prepared by the great fathers and by S. Benedict, equipped in the armor of the Order of intellectual chivalry. And what was the work before him? Who were his enemies, his friends, his neighbors, his assistants? In answer to these questions we have the chapters on “Abelard, or Rationalism and Irreverence”; on “S. Bernard, or Authority and Reverence”; on the “Schools of S. Victor”; on the “Arabian and the Jewish Influence in Europe”; on “William of S. Amour”; on “Paris and its University”; and on “Albert the Great.” Some of these chapters relate, as will be seen, to men who were not contemporaries of S. Thomas. But if Abelard, and S. Bernard, and William of Champeaux had passed away in the flesh, their influence or their views still lived on when Thomas wrote. And we see the full significance of these chapters on the great schools of thought, orthodox and heterodox, when we arrive at the second volume, and find the author showing in detail how the Angel of the Schools, in some part or other of his voluminous writings, met and refuted every form of prevalent error, and, whilst majestically laying down principles for all ages, never forgot to clear up the difficulties of his own time. The rationalism of Abelard, the emanation doctrines that Arabian subtlety had elaborated out of the reminiscences of the old Gnosticism, the errors of the Greek schismatics, the perversity of the Jews, are all encountered by his never‐resting pen, either in some one of his numerous _Opuscula_, varying in length from an essay to an octavo volume, or else in one or other of his two great _Sums_, or perhaps in more places than one, the refutation being the more complete as the writing becomes more mature. As for the two greatest and most prominent of his enterprises—the Christianizing of Aristotle and the formation of a complete _Sum_ of theology—it was to be expected that Prior Vaughan should fully enlarge upon them. The chapters on “S. Thomas and Aristotle,” and “S. Thomas and Reason,” in the second volume, form a good